Can Splunk store a list of strings that can be referenced in a Splunk search?

I am trying to make sure all expected pm files run by a given time. For instance, if I have 5pm files, I would like to verify that those 5 specific files have completed by 5pm. My approach would be to have a list of expected files, and then execute a search at 5pm that searches all the files for a given index and cross references them with the expected list to make sure that they have ran. How could this be done in splunk